Question

关于将数据活动传递给Fragment有很多问题。

但我有“替换”方法的问题。我使用片段是因为滑动tablayout。

我想从Character1_activity.java传递数据 - ＆gt; TabFragment1.java

这是代码。

Character1_Activity.java

public class Character1_Activity extends Activity implements View.OnClickListener{

   public String food_box;
   public String water_box;


 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
        layoutParams.flags = WindowManager.LayoutParams.FLAG_DIM_BEHIND;
        layoutParams.dimAmount = 0.7f; // 흐린 정도
        getWindow().setAttributes(layoutParams);
        setContentView(R.layout.character1);

}


 public void onClick(View v) {
        switch (v.getId()){


        case R.id.closebutton1 :
            Intent intent = new Intent(this, Next_day.class);
            CheckBox food = (CheckBox) findViewById(R.id.food_cb);
            CheckBox water = (CheckBox) findViewById(R.id.water_cb);

            if(food.isChecked() == true)
                food_box = "true";
            else
                food_box = "false";

            if(water.isChecked() == true)
                water_box = "true";
            else
                water_box = "false";

            TabFragment1 fragment = new TabFragment1();

            if(fragment != null) {
                FragmentManager fragmentManager = getFragmentManager();

                Bundle bundle = new Bundle();
                bundle.putString("food_box", food_box);
                fragment.setArguments(bundle);

                fragmentManager.beginTransaction().replace(R.id.game_main, fragment).addToBackStack(null).commit();

            }




            this.finish();
            break;

这是TabFragment1

public class TabFragment1 extends Fragment {


    String ch1_water;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.tab_fragment_1, container,false);


        getArguments().getString("water_box");
}

Answer 1

来自活动： -

Bundle bundle = new Bundle();
bundle.putString("food_box", foodbox);
fragment.setArguments(bundle);

片段onCreateView方法：

    String strtext = getArguments().getString("food_box");

Answer 2

（考虑到你不想使用bundle来传递数据）你可以尝试通过创建一个普通的单例类来在Activity和fragment之间传递数据。根据您的要求，您可以创建一个类来设置和获取数据。下面是单例类的一个示例，可用于在片段之间传递数据

public class DataClass {
private static DataClass dataObject = null;

private DataClass() {

}

public static DataClass getInstance() {
    if (dataObject == null)
        dataObject = new DataClass();
    return dataObject;
}
private String distributor_id;;

public String getDistributor_id() {
    return distributor_id;
}

public void setDistributor_id(String distributor_id) {
    this.distributor_id = distributor_id;
}

}

设置数据

DataHolderClass.getInstance().setDistributor_id("your data");

并获取数据

String data = DataClass.getInstance().getDistributor_id();

如何将数据从活动传递到片段？

2 个答案: